Hawaiian Legacy Hardwoods implements RFID to identify its individual trees and track their lifecycle. …
… “Hawaiian Legacy Hardwoods’ IT (Information Technology) specialists are integrating their proprietary system that includes a GPS / GIS (Global Positioning System / Geographic Information System) plantation-wide mapping system where each Koa tree planted will be equipped with RFID (Radio Frequency IDentification). The RFID program means that each individual tree is equipped with a computer signature, which will track ownership, growth, maintenance, lumber-yield and pedigree for the tree owner. The GPS / GIS system will locate each tree by an exact set of geographic coordinates allowing the tree owner to locate their trees on maps and by satellite imagery.” …
via Hawaiian Legacy Hardwoods: RFID Investor Tree Tracking Program.
RFIDa: RFID Technology is an internet destination dedicated to documenting the application of radio frequency identification technologies. 
